CN105134374A - Compound precompression environment-friendly energy-saving type two-stroke engine - Google Patents

Abstract

The invention provides an innovative environment-friendly energy-saving type two-stroke engine which can work either in a gasoline manner or in a diesel oil manner. Precompressed gas is generated by an engine cylinder itself and then supplied to a main compression chamber for working by the adoption of the feature that the power of the two-stroke engine is high, pure fuel oil is adopted for working, and harsh emission of an original two-stroke engine is reduced. Compound auxiliary cylinder opposed-piston work is adopted, the air supply capacity of precompression is multiplied, and crankcase oil seals and crankshaft middle oil seals of the multi-cylinder two-stroke engine are omitted; a crankcase is changed into an engine oil chamber, and a cylinder piston and a piston ring are lubricated separately, so that the lubricating condition is improved, and the service life of the engine is prolonged; a physical structure at a gas opening position is improved, feeding of fresh flammable gas and discharging of all waste gas are facilitated, and the loss of the fresh flammable gas is controlled; oil consumption is lowered, precompression pressure is enhanced, and the power of the engine is improved; designers pay more attention to energy saving and emission reduction in design, and the two-stroke engine is low in weight, simple in structure, low in production and manufacturing and maintenance cost and long in service life; and the power of the two-stroke engine is two times more than that of a four-stroke engine under the same displacement, and the displacement of the two-stroke engine is the same as that of the four-stroke engine.

Description

Compound precompression environment-friendly and energy-efficient two-cycle engine

Art:

What the present invention relates to is that a kind of " compound precompression environment-friendly and energy-efficient two-cycle engine " this invention design can be two-cycle gasoline diesel oil and two-stroke diesel engine simultaneously, for one-way valve type work is done, the motor complete machine of multi-cylinder can be designed to V-type pattern and the pattern such as opposed type pattern or type in upright arrangement, and art is motive power machine equipment.

Background technique:

The present invention's " compound precompression environment-friendly and energy-efficient two-cycle engine " be former with gasoline be fuel " environment-friendly and energy-efficient petrol engine " basis on, increase the service life as possible when work is done for making motor, give play to best using effect and used most economical fuel, reduced the discharge of Litter and most economical manufacturing cost as possible and design.The structure of former two-cycle engine.Piston, piston ring, the little axle of piston, crankshaft bearing and bent axle stub bearing all must by mixing oil lubricating few in the oil, reduce greatly the working life of the component that arrive because working in worst situation, this namely gas car why do not use the main cause of two-cycle engine, be just out of order with several days motors, must keep in repair.Separately, piston arrives combustion gas before bottom dead center, almost suction port is also opened simultaneously, put into fresh inflammable gas, it seems now that the intake and exhaust of two original stroke gasoline engines are on same point position, suction port is in fact still lower than relief opening, and fresh inflammable gas sprays in cylinder block by the pressure paying compression of crankcase again, also will by having the new inflammable gas of pressure outside waste gas kickoff mechanism, and piston stroking upward also needs first to close complete suction port, then finish relief opening in pass, because of residual waste gas be will by have pressure fresh combustible gas kickoff mechanism outside, and porting is all located at the foot of pressing chamber, such meeting has 25% because of intake and exhaust short circuit---the new inflammable gas also do not burnt between 40%, will take outside machine with waste gas, so not only waste the energy, but also serious pollute physical environment.Although the designer of former motor, the suction port of motor is designed more than 45 °, in order that allow new inflammable gas upwards run as possible when entering firing chamber, so that emptying waste gas as possible, but the dead angle area also having nearly 35% cannot process, and can affect the power of motor.Here it is original two-stroke gasoline engine, also exists 25%---the reason that the wave of the amount of energy of 40% is useless.Also has original two-stroke gasoline engine, insoluble severe exhaust emissions all the time, the serious pollution to environment caused.Extremely, in the large situation of in addition " environmental protection and energy saving, low-carbon emission " at present, existing two rush gasoline journey motor, have been the stage that namely will exit existing time history in eventually above-mentioned situation institute.

---descending air-breathing---up compression---outburst acting that having four-stroke motor, four-stroke gasoline engine does program from work and opens and make: piston stroking upward scavenging.Only have between whole 720 ° 180 degree be in operation acting, other 540 degree are all paying acting, and this plays most code should be called it is that intermittent type does work, and this can reduce the power of motor naturally.In addition, four stroke engine is when actual work is done, also have camshaft, valve rocker, valve spring, the valve (four stroke engine of some lower arranging cam axle, also need to arrange lower valve rocker, valve stem) etc. another parts, and these another parts are operationally, are all naturally to consume certain power, the acting of these another parts, reality is all for being negative acting.

But two its structures of journey motor are simple, lightweight, volume is little, it is easy to maintenance to manufacture, cost is low, pay and do manual work less, and more importantly, output power is powerful, the output power of two stroke gasoline engines, normally with 1.6 of discharge capacity four-stroke gasoline engine output power---1.8 times is more than its maximum strong point.Accordingly, as long as resolve the difficult problem existing for above-mentioned two stroke engine thoroughly comprehensively, after two-stroke gasoline engine passes through deeply research and development and improvement, as long as give up its originally severe exhaust emissions, make good use of the distinctive performance of chiseling more of two stroke engine fully, so, the development of two stroke engine, still very promising.From the practicability of two-stroke machine to Lightweight Vehicles: due to two stroke engine than four stroke engine weight, power, safety, reliability, etc. each side have more advantage, so in the practicability of light-duty traction, adopt two stroke engine be naturally non-it do not belong to.While motor weight reduction, that is alleviate burden, larger carrying capacity can be had or have better mobility.What between current, this advantage showed on the first-class dilly of four-wheel wagon is also also few.But in the sea, land and sky of trailbike motion, helping meet an urgent need etc. in field with special type military Hangzhoupro sky, is definitely that first two stroke engine charges and shatters enemy positions.The two stroke engine in past, because severe discharge, but the society that is applied in of two stroke engine is limited by very large. along with the reform and development of the item technology such as such as in-cylinder direct injection and perfect, the emission problem of two stroke engine will be able to comprehensive solution, and two stroke engine also will be light and handy because of it, simple and reliable for structure, the advantages such as specific power is large are widely used, because each stroke of two stroke engine has acting, so it has very high power ratio, also because structure is simple, there is again the weight--to-power ratio of the discrepancy in elevation, the ratio ratio of volume ratio ratio and production and processing maintenance cost, and the position in her is possessed and control at station fast, her effect and speciality are given play to.

Summary of the invention:

Invention introduction: in order to solve the deficiency of more than original two old-fashioned stroke gasoline engines, " compound precompression environment-friendly and energy-efficient two-cycle engine " is on " environment-friendly and energy-efficient two-cycle engine " basis, upgrades again and improve original motor.When the structure of designed engines, the working environment of motor is changed, retain the normal place of former motor, change deficiency.Especially: ' referring to the new technological scheme that product, method or its improvement are proposed '.Change job specification and the operating conditions of former two stroke engine; add the working life of complete machine; increase the output of engine power; solve the severe discharge of original two-cycle engine to the problem of severe environmental pollution; echo the large situation in the world of " energy-saving and emission-reduction; low-carbon (LC) is lived, protection of the environment ".When reality is implemented.Change former two-cycle engine history and utilized the precompressed structure of crankcase, after this cylinder produces pre-compressed gases, directly supply master cylinder compression and combustion outburst work done.Change the custom that former two stroke gasoline engines history use blend gasoline, change to be set to and use pure gas and oil work by combustion, the discharge solving original two stroke engine severe is beneficial to environmental protection, this motor is in order to the supply capacity of more favourable increase live gas, set up again the attached cylinder Dual Piston of horizontally disposed attached cylinder and operation opposed with main piston, add precompressed ability, by the precompressed compression ratio of original two-stroke crankcase less than 2: 1, be increased to more than 6: 1, the amount adding air feed improves precompression ratio, also the ability of air feed is just added, particularly diesel engine, the supply of more sufficient pre-compressed gases, ensure that powerful work rate exports.Change the profile of original physical arrangement of motor gas port and the mode of ventilation and piston, and the profile of cylinder head, precompressed gas flings the exhaust dead angle area of original two stroke engine after entering cylinder body, add the ability of engine blow-through air, the loss being conducive to emptying waste gas and control live gas is beneficial to energy-conservation and increases power.The work of having changed former two stroke gasoline engines main parts is done mode and is improved complete machine lubricating condition, and directly lubrication and the directly right main easily damaged parts of the inorganic oil pump of splash lubrication lubricate, and add the life-span of motor.Take pains and focus on overall design structure simply, lightweight is little, and type usage range is wide, and the cost of the manufacturing is low, thus reduces car load price, and convenient for maintaining, as it focuses on saving the energy, conservation of nature environment, and must low-carbon emission.The design is applicable to single cylinder and the multicylinder engine of V-type W type and type in upright arrangement.

Concrete invention:

The invention design of this motor gas port place physical arrangement: the performance of a motor and work do principle mainly: air inlet, compression, outburst acting, exhaust.So just can find out, the performance of two stroke engine depends on the ability of scavenging process to a great extent, the process of scavenging is also one of emphasis of two stroke engine research always, highly organized scavenging process, obtain the inflation of fresh abundance large as far as possible, maximum acting tool is played for cylinder have very great significance, namely be adopt the method for numerical simulation to go research, but prerequisite condition also must provide enough powerful pre-compressed gases, only have entering and advancing of enough pre-compressed gases, can gas that well supply is new and scavenging.The comprehensive integral setting that gas port place is new, make intake and exhaust more smooth and easy, newly-designedly include live gas specific works mode in, and newly-designed physical angle, the position that air-flow directly reaches designed can be made, fling (54) after bottom the exhaust zone above porting, parallelly to push ahead (Fig. 9 page), the loss decreasing fresh inflammable gas as possible, when two stroke gasoline engines of changing over are taken a breath, because of the short circuit phenomenon also existed, fresh inflammable gas between 25%--40% is made directly to discharge outside machine and run off.Solve the process of this key position, stopped to run off the energy waste caused because of fresh inflammable gas.

The invention design of the attached cylinder of this engine water flat and the compound work of the opposed operation of piston, exactly in order to increase the amount of including in of live gas, can find out at Fig. 4, in 5 pages, to sit down portion in the cylinder block of original environment-friendly and energy-efficient two stroke engine kind, add the attached cylinder cylinder block opposite with original cylinder block, and in this cylinder block, be designed with attached cylinder piston, be provided with piston torque arm in the bottom of attached cylinder piston and be connected with piston, be provided with piston torque arm slide block in piston torque arm lower end.The side relative with bent axle stub on the crank of bent axle, the attached cylinder piston being designed with matrix runs slideway, and the piston torque arm slide block of piston torque arm lower end design is inserted in this slideway.Like this when crankshaft rotating, two eccentric circumference will be produced in motion simultaneously, because the attached cylinder piston of the matrix of its design runs slideway, with the crank of bent axle is in relative side with bent axle stub, when crank rotation, two pistons will produce opposite motion like this, that is when main piston is descending, attached cylinder piston will be up, like this when main piston is to lower dead center, attached cylinder piston all will enter the inside of main piston, and the inflammable gas that main piston inside retains all is extruded and sent main pressing chamber to.Bent axle revolves and continues operation when going to another half cycle, and main piston starts up, and attached cylinder piston will be descending, and motor starts to suck ozone in precompression chamber.Here attached cylinder piston is when entering main piston, and the attached outer wall of cylinder piston and the inwall of main piston, must leave some gaps, and particularly in close precompressed inflammable gas suction port side, gap wants more bigger, can be convenient to the flowing of pre-compressed gases like this.Doing quality for protecting positive motor work, piston torque arm slideway can be designed at crankcase wall place.

The invention design at this engine cylinder place: see Fig. 7 page: changed the structure of cylinder block, cylinder block bottom is being tied with body and place shuts.When descent of piston is compressed to lower dead center to the new combustible gas sucked, precompressed inflammable gas is in the pre-compressed gases air outlet of cylinder block bottom, to be entered mouth by precompressed air passage to precompression inflammable gas, in cylinder block, inject new inflammable gas, the pressurized gas herein designed is not entering crankcase.Oilhole is provided with at the middle part of cylinder block, oilhole is herein parallel with the annular lubricant oil duct being arranged on cylinder body body, make lubricant oil real sliding to the inwall of cylinder by oilhole, rock out of shape when working for preventing piston guide rod, be added with piston guide rod guide slide in cylinder block bottom, enter a pair pressing chamber for preventing machine oil and be provided with oil sealing herein.This design, because pre-compressed gases is not entering crankcase, has deducted the space of crankcase, by the pre-compressed gases retained in original two-stroke engine crankcase space, has all been supplied in firing chamber and adds precompressed gas supply capacity.

The invention design of this engine crankcase place and lubricating system: because the present invention changes the structure of having established cylinder block and piston, pre-compressed gases is made not enter crankcase enforcement precompression, the design of crankcase place changes the engine oil chamber (47) that can communicate with gear-box into, eliminates the precompression air supply channel in former crankcase portion.More importantly take away herein for stoping pre-compressed gases to run out of choke oil sealing outside crankcase, the choke oil sealing of particularly having taken away again between multi-cylinder two stroke engine bent axle, lubricant oil is so just directly used to implement lubrication to the main part of motor, the working life adding main engine-part of several times.Concrete lubricating system is, changed by crankcase and be set to engine oil chamber filling engine oil, so crankcase is engine oil chamber again, in crankcase, lubricant oil directly implements lubrication to each positions such as bent axles, be provided with oil pump machine oil pipeline in crankcase, machine oil arrives cylinder body portion by oil pump, machine oil pipeline.According to the type of motor, opposed engine directly can fly low-priced formula lubrication, and its vertical engine utilizes oil pump machine oil pipeline to implement lubrication, and this lubrication mainly implements lubrication to the parts such as cylinder block and piston.Lubricating system herein is also designed to the lubricating system of two kinds simultaneously, a kind of design is that oil pump is by machine oil pipeline, the lubricant oil in machine is utilized to implement lubrication to cylinder body and piston, another kind of lubricating system is in machine, arrange two-stroke oil pump, the in-line of oil pump is guided to outside machine, special two-stroke sump is set outside machine, two-stroke machine oil is utilized to implement lubrication to the component such as cylinder block and piston specially, such design just makes the component at cylinder block position, forever can obtain the lubrication of fresh lubricating oil.Because in a motor, the work amount of doing of cylinder block and piston, piston ring is maximum, two stroke motor is when normally working, four to six thousand times all must be come and gone in piston per minute, only has effective working life of protecting positive cylinder piston, piston ring, the working life of raising motor that can be real.Because change the lubricating system of original two stroke engine cylinder piston, also the mode that two stroke engine tradition uses oil-in-gasoline lubrication is just changed, lubricant oil is not being added in fuel oil, motor just uses pure fuel oil service, change the discharge that original two stroke engine is severe, the discharge that newly-designed two-stroke is started, be same as the discharge of four stroke engine tail gas and up to standard, alleviate the discharge of various harmful substance, accomplish low-carbon emission and useful environmental protection.

The invention design at this engine piston place: see Fig. 6 page, change the structure that piston is original, the upper epidermis of piston is split up into two structures, open in precontract 1/13rd punishment of piston, to be designed to sharp convex upwards, front portion is the cambered surface of regulating the flow of vital energy coordinated with suction port of design, and firing chamber is the upper top being located at piston herein, the exhaust being simultaneously designed to be harmonious with relief opening is herein regulated the flow of vital energy cambered surface, smooth and easy with what ensure when being vented.Being equipped with piston guide rod in the bottom of piston, is secure fit with piston, is being connected with bent axle chain bar by little axle.

The technological scheme that technical solution problem of the present invention adopts is:

In order to solve the deficiency of more than original old-fashioned two-stroke gasoline engine, " compound precompression environment-friendly and energy-efficient two rushes motor ", devise the attached cylinder of level of two stroke engine, with the compound work of the opposed operation of piston, the cylinder block of original environment-friendly and energy-efficient two stroke engine kind sits (36) in the diagram, add the attached cylinder cylinder block (24) opposite with original cylinder block, and in this cylinder block, be designed with attached cylinder piston (33), be provided with piston torque arm (29) in the bottom of attached cylinder piston to be connected with piston, piston torque arm slide block (30) is provided with in piston torque arm lower end.The side relative with bent axle stub (32) on the crank of bent axle, the attached cylinder piston being designed with matrix runs slideway (31), and the piston torque arm slide block (30) of piston torque arm lower end design is inserted in this slideway.Like this when crankshaft rotating, two eccentric circumference will be produced in motion simultaneously, because the attached cylinder piston of the matrix of its design runs slideway (31), with the crank of bent axle is in relative side with bent axle stub (32), when crank rotation, two pistons will produce opposite motion like this, that is when main piston (16) is descending, attached cylinder piston (23) will be up, like this when main piston (16) is to lower dead center, attached cylinder piston (23) all will enter the inside of main piston (16), the inflammable gas that main piston inside retains all is extruded and sent main pressing chamber (34) to, because attached cylinder piston is when work is done, the inside of main piston need be entered into therefore be referred to as compound precompression.When crankshaft rotating continuation operation goes to another half cycle, main piston (16) starts up, and attached cylinder piston (23) is exactly descending, and motor starts to suck ozone in precompression chamber.Here attached cylinder piston (23) is when entering main piston, the attached outer wall of cylinder piston (23) and the inwall of main piston, some gaps must be left, particularly in close precompressed inflammable gas suction port (8) side, gap wants more bigger, can be convenient to the flowing of pre-compressed gases like this.Doing quality for protecting positive motor work, piston torque arm slideway (35) can be designed at crankcase wall place.Such global design, just begin to obtain the environment-friendly and energy-efficient two stroke engine that originally designed, the pre-compressed gases that internal piston retains all is utilized, also the utilization in precompression chamber space is just increased, this be in main piston (16) up time, because of opposed operation during two piston, attached cylinder piston (23) is descending, and attached cylinder piston can also design the position coming downwards to below attached cylinder cylinder body flat mouth, so also just more increase the space of precompression chamber, make precompressed gas supply more sufficient, this design gasoline engine because of its compression ratio must not be too large, the compression ratio of the fuel combination of gas and oil is excessive, engine auto-ignition will be made.And the supply of pre-compressed gases of diesel engine because which increasing nearly one times, so no matter gasoline engine or diesel engine, the compression ratio of main pressing chamber can be adjusted, the stroke shortening piston improves the revolution of motor, increase the torsion, particularly diesel engine of motor, after shortening the stroke of motor, decrease the workload of motor, not only add power and too increase the working life sending out ground machine.

After newly-designed motor changes the physical arrangement of having established gas port, the embodiment of whole scavenging process, see 8 pages, accompanying drawing, below do with detailed description to the process of detailed scavenging work and the design of scavenging mode and being operated in of complete machine: in two stroke engine, the function of gas port is very crucial, asks for an interview 5 pages, accompanying drawing in the process of this gas port.A in figure, piston stroking upward implements compression to the inflammable gas in cylinder, and to spark plug during top dead center (43) igniting, by the combustible gas compressed in cylinder block of igniting (13), the combustible gas after outburst starts acting, promotes descent of piston.Descent of piston now, to time before bottom dead center, is first need will open relief opening to see B in figure (14) place, implements scavenging, now first discharge most of waste gas (56) to the waste gas in cylinder block.Piston continuation is descending sees C in figure, and then precompressed air suction port (8) is opened, start in cylinder block, inject fresh combustible gas (55), can be clearly seen that in C from figure, fresh combustible gas (55) enters the bottommost place just flinging waste gas in cylinder block after in cylinder block, then clean thoroughly by waste gas (56) release in cylinder block.Piston continuation is descending sees Fig. 8 D, and porting is all opened, and whole scavenging work completes.The exhaust of design piston matrix firing chamber is here regulated the flow of vital energy cambered surface (74), omit height a bit above, become smoothly arc just to exhaust port (14), accompanying drawing 4 (14) place is shown in elongation of here exhaust port height reduction also being done the best again, is beneficial to the quick discharge of waste gas.The design of the suction port (8) of precompressed air here, it is far from being enough for depending that the angle be originally arranged on casing wall regulates the flow of vital energy alone, also therefore original two-stroke gasoline engine just can cause the loss of a large amount of new inflammable gass to see (57) place in 10 pages, accompanying drawing, after the function that make use of new design piston herein, when opening precompression suction port (8), fresh precompression inflammable gas, just by the air inlet of piston regulate the flow of vital energy cambered surface (12) control arrange, directly rush at the bottom of the exhaust dead angle area (54) that cylinder head cannot process originally, and utilize the rounded convex being arranged at thick stick lid front portion that rear and low part relief opening (14) place of gas to cylinder head and cylinder body is being advanced, Cylinder head design is here oblique straight type, the gas of such flowing is also just without any resistance, suction port is opened larger and larger, because new inflammable gas is by the sequencing entering cylinder, combining global revision setting herein, make new inflammable gas form a straight shape to push ahead, design here, be all unresisted smooth and easy work, more be conducive to outside whole for waste gas kickoff mechanism, in turn ensure that fresh combustible gas is not running off from exhaust ports simultaneously.

The descent of piston of motor is to lower dead center, implement precompression to precompression chamber (77) to complete, precompressed air is by precompressed air air outlet (7), precompressed air passage (10), precompressed air suction port (8) enters cylinder block (13), piston (16) is up implements compression to new combustible gas, spark plug (43) arcing when piston (16) goes upward to top dead center, ignite by the combustible gas compressed, combustible gas promotes descent of piston, piston (16) is connected with piston guide rod (3), piston guide rod (3) is connected with bent axle chain bar (20) by the little axle of piston (19), bent axle chain bar does not enter the precompression chamber (77) of cylinder block, but be converted to by bent axle (22) outside rotation power output machine by the longitudinal direction acting that piston guide rod (3) receiving piston (16) transmits.Crankcase is not herein because needing to compress again, and just filling engine oil, changes engine oil chamber (47) into, because crank (bent axle) directly works in lubricant oil, make each crankshaft bearing, connecting rod bearing, little axle bearing is obtained for fabulous lubrication.Piston (16), the lubrication of piston ring (15) leans on the knockout press of crank to be thrown away by machine oil to do splash lubrication, fly low-priced machine oil and arrive left and right oil chamber (71) (72) by splash lubrication passage, oil piston ring (17,21) control is to all horizontal lubricant oil.Because be each group of cylinder body of V-type arrangement in figure, the design of its angle is also different, and for ensureing machine oil supplying, therefore the form design of the oil chamber at position, left and right two is not identical yet.This is to the design of the lubricating system at cylinder block place, more reliable for ensureing lubrication effect, also can be designed to utilize oil pump (68), machine oil pipeline (69), lubricant oil is utilized oil pump (68), directly delivered to the annular lubricant road (52) of cylinder body body by machine oil pipeline (69), annular lubricant road communicates with lubricating cylinders hole (53).Array respectively organizes the motor of cylinder body in this way herein, just can design identical pattern oil chamber.Machine oil is by cylinder block lubrication hole (53) to cylinder inner wall, and piston, piston ring lubricates, by piston lubrication back oil road (6) backspace engine oil chamber when lubricant oil is too much.May seal in cylinder as the lubricant oil when piston stroking upward and enter relief opening, process is herein that porting is left as possible in lubricating cylinders hole (53), and the strict delivery volume controlling lubricant oil, be as the criterion to ensure that lubrication is enough, but the lubricant oil with regard to minute quantity enters cylinder body also can not cause great pollution, but pre-compressed gases air outlet (7) can not be opened when design piston bottom oil ring (21) is herein descending, to ensure that lubricant oil does not herein contact with precompressed mixed gas.Tooth for subsequent use (26) place can for diesel engine part.

Environment-friendly and energy-efficient is from single cylinder small-power until the compound precompression environment-friendly and energy-efficient two of multi-cylinder superpower rushes motor, its design can be the motor of gasoline and diesel oil two kinds of patterns, change the original precompressed working method of two stroke engine history crankcase (crankcase volume is detained a large amount of combustion gas and the motor that arrives supplies unsaturated vapor), be designed to non-crankcase precompression and non-pair of cylinder precompression, after producing precompression gas by this cylinder oneself, the main pressing chamber of body direct-furnish compresses explosive combustion acting, and has abolished the oil sealing between original multi-cylinder two stroke engine bent axle.By the original precompression ratio less than 2: 1, be increased to more than 6: 1, improve precompression ratio, add the ability of air feed, particularly diesel engine, the supply of more sufficient pre-compressed gases, ensure that powerful work rate exports.Change the setting and physical arrangement of having established motor gas port place comprehensive integral, strengthen the ability of scavenging, fully and completely remove the residual exhaust gases of original two stroke engine exhaust dead angle area, fresh combustible gas supply is more sufficient, and improve the revolution of motor as possible, effectively raise the power of motor.When and Du has determined, original two stroke engine is taken a breath, the loss of the fresh inflammable gas of 25%---40%, saves the energy.This motor uses pure fuel oil service, and change the discharge that original two stroke engine is severe, emission compliance is beneficial to environmental protection.Change the lubricating condition of motor, changed by the crankcase of original two stroke engine precompression and be set to engine oil chamber, lubricant oil directly implements lubrication, the working life adding motor of several times to the another parts of complete machine.Opposed type two stroke engine, two groups of cylinders work in the same horizontal line, and such A cylinder outburst work done back piston is descending, and now just in time the piston stroking upward of B cylinder implements compression to the inflammable gas in cylinder.Otherwise and, the compression of A cylinder piston stroking upward has just in time been promoted again when B cylinder outburst acting.Such two groups of cylinder cooperatings, also two groups of cylinders power required when compressing just well is solved, and be opposed type work because of motor for this reason, between opposed two work combinations mutually cancellation engine flare time the vibrations that produce, eliminate again the another parts of motor for shock absorbing.The acting that piston produces is exported by semiaxis conversion.The power stage of newly-designed two stroke engine, to exceed 2.0 times of same discharge capacity four stroke engine power, and structure is simpler, volume is less, weight is lighter, power stage and load-carry duty larger, cost is lower, it is more convenient to manufacture maintenance.

This motor is about the specific design of electrospray and enforcement, this motor advocates to be implemented on the larger motor of discharge capacity for electrospray, here main or because of electron spraying system cost is still higher, if be arranged at the motor of small displacement, its cost is more taller than motor possibly, such Consumer can not acknowledge, say be arranged at small displacement engine time each side effect also can not be too obvious.For the enforcement of the electrospray compared with large-duty engine, the design of this motor advocates to implement in the front portion of precompressed inflammable gas suction port (8), do not advocate that design is at in-cylinder direct injection, because the working method of in-cylinder direct injection, can, because of the effect of atomization not as cylinder sprays, PM value after burning, be made to increase several times outward.

Embodiment

A kind of " compound precompression environment-friendly and energy-efficient two-cycle engine ", its external form is V-type type in upright arrangement opposed type alive, the design of complete machine, can as the motor of petrol engine and diesel engine two kinds of character and use, it is characterized in that: devise horizontally-opposed operation block structure, for increasing receiving the ability of gas, change the physical arrangement of having established original motor gas port, strengthen scavenging ability, do not utilizing crankcase precompression, after this cylinder oneself produces pre-compressed gases, supply main pressing chamber burning outburst and do function, crankcase changes engine oil chamber into and uses lubricant oil directly to main engine-part, comprise cylinder piston and implement lubrication, designed two stroke engine is not in use mixed fuel burning outburst acting, use pure fuel oil service.

Be designed to the working method of non-crankcase compression, after producing pre-compressed gases by this cylinder oneself, function is done in the main compression outburst of direct-furnish, sit in the cylinder block of original environment-friendly and energy-efficient two stroke engine, add the attached cylinder cylinder block opposite with original cylinder block, and in this cylinder block, be designed with attached cylinder piston, be provided with piston torque arm in the bottom of attached cylinder piston to be connected with piston, piston torque arm slide block is provided with in piston torque arm lower end, the side relative with bent axle stub on the crank of bent axle, the attached cylinder piston being designed with matrix runs slideway, the piston torque arm slide block of piston torque arm lower end design is inserted in this slideway, like this when crankshaft rotating, two eccentric circumference will be produced in motion simultaneously, because the attached cylinder piston of the matrix of its design runs slideway, with the crank of bent axle is in relative side with bent axle stub, when crank rotation, two pistons will produce opposite motion like this, when main piston is descending, attached cylinder piston will be up, like this when main piston is to lower dead center, attached cylinder piston all will enter the inside of main piston, the inflammable gas that main piston inside retains all is extruded and sent main pressing chamber to, the pre-compressed gases being originally trapped in main piston inside is so just made all to be utilized, the precompression of former motor less than 2: 1 is increased to more than 6: 1, increase the ability that air demand improves air feed, add the power of motor, what utilize piston and cylinder coordinates the physical arrangement changing and established gas port place, new combustible gas is gone directly favourable emptying waste gas bottom waste gas, after changing the physical arrangement at former motor gas port place, prevent original two stroke engine because of ventilation short circuit, the loss of the inflammable gas 25%-40% caused, this motor is not utilizing crankcase precompression, crankcase changes engine oil chamber into, and according to the type of motor, splash lubrication is done to each parts and directly lubricates, or utilize oil pump machine oil pipeline to implement lubrication, the machine utilizes oil pump and machine oil pipeline lubrication, mainly lubrication is implemented to cylinder block and piston, utilize the lubricating system of oil pump machine oil pipeline herein, also be designed to the lubricating system of two kinds simultaneously, a kind of design is that oil pump is by machine oil pipeline, the lubricant oil in machine is utilized to implement lubrication to cylinder body and piston, another kind is in machine, arrange two-stroke oil pump, the in-line of oil pump is guided to outside machine, special two-stroke sump is set outside machine, two-stroke machine oil is utilized to implement lubrication to the parts such as cylinder block and piston specially, because this motor has established special lubrication facility to cylinder piston, therefore motor is changed be set to use pure fuel oil service, exhaust emissions is made to be same as four stroke engine.

The working method of the design at the gas port place of complete machine is, main piston is up implements compression to the inflammable gas in cylinder, attached cylinder descent of piston precompression chamber includes new gas in simultaneously, main piston is to the quick-fried acting of top dead center gas fuel burning, precompression chamber now receive gas also to complete, it is descending that inflammable gas promotes main piston, attached cylinder piston stroking upward simultaneously in attached cylinder, precompression is implemented to including gas new in precompression chamber in, main piston is to time before bottom dead center, first relief opening is opened, by outside the waste gas discharge machine in cylinder block, piston continuation is descending opens precompressed air suction port, start to inject fresh combustible gas in cylinder block, also just waste gas remaining in cylinder is scanned out outside machine simultaneously, after main piston to the attached cylinder piston of lower dead center all enters main piston, motor enters next working procedure, can be clearly seen that in C from figure, fresh combustible gas enters the bottommost place flinging waste gas in cylinder block after in cylinder block, then thorough by outside the waste gas kickoff mechanism in cylinder block, piston continuation is descending sees Fig. 8 D, porting is all opened, whole scavenging work completes, the exhaust of described design piston matrix firing chamber is here regulated the flow of vital energy cambered surface, slightly high above, become smoothly arc just to exhaust port, here again exhaust port is suitably lengthened, be beneficial to the discharge of waste gas, the design of described precompressed air suction port, it is far from being enough for depending that the angle be originally arranged on casing wall regulates the flow of vital energy alone, also therefore original two-stroke gasoline engine just can cause the loss of inflammable gas new in a large number, head it off is the structure of having changed piston, front top about 1/13rd place of piston is designed to sharp convex, and leaning on precompression suction port side, piston is provided with camber air inlet upwards and regulates the flow of vital energy cambered surface, this design is main for solving the new circulation angle of pre-compressed gases after entering cylinder block, cannot process original two stroke engine, in cylinder block, the waste gas of dead angle area does and clears up eliminating very well, here new pre-compressed gases directly rushes at the bottom of cylinder cap front end waste gas after entering cylinder block after, straight expansion covering of the fan is formed and the waste gas better released in cylinder when turning back, and the just new gas of guarantor can not be run out of outside machine, the upper top that the firing chamber of described motor is located at piston is lower concave arc shape, cylinder cap and piston form firing chamber at piston to during top dead center, and the firing chamber place of cylinder head is designed to oblique flat type, this design is also main for solving new pre-compressed gases after entering cylinder block, process for the waste gas of the dead angle area in cylinder is got rid of, piston guide rod is equipped with in the bottom of piston, be secure fit with piston, be connected with bent axle chain bar by little axle, bent axle chain bar do not enter the precompression chamber of cylinder block, but exported by crank conversion by the acting that piston guide rod receiving piston transmits, described piston, piston ring, the Lubrication Design of cylinder inner wall is two kinds of modes, a kind of mode leans on the knockout press of crank to be thrown away by machine oil to do splash lubrication, another kind of mode is by oil pump, machine oil pipeline implements lubrication, in two, lubricating system is all that first lubricant oil arrive annular lubricant oil duct, annular lubricant oil duct communicates with lubricating cylinders oilhole, lubricant oil enters cylinder inner wall by lubricating cylinders oilhole, to cylinder inner wall, piston, piston ring lubricates, by back oil road backspace engine oil chamber when lubricant oil is too much, this motor advocates to implement in the front portion of precompressed inflammable gas suction port for the enforcement of electrospray, do not advocate that design is at in-cylinder direct injection, because in-cylinder direct injection can because of the effect of atomization not as cylinder sprays outward, PM value several times can be made after burning to increase.

This motor accomplishes as possible that when designing and specifically implement structure is simple, and we know, any one equipment, and another parts are various, and its working resistance will be larger.Another parts are various, operationally also more easily break down, and another parts are various, its manufacturing and the cost of maintenance also higher, consuming time also longer, another parts are various, and its larger weight of volume will be heavier.Therefore the design of this motor, accomplishes that structure is simple as possible, economical and practical durable.

Below in conjunction with of the present invention pair of figure and component part numbers, the utility model is described further:

Fig. 1 is that the complete machine of this motor intuitively cuts working principle plan view component and numbering open.The schematic diagram being designed to the two-cycle engine of the multi-cylinder of V-type of this figure.

Fig. 2 is the schematic diagram that working principle left view intuitively cut open by the complete machine of this motor.

Fig. 3 is the schematic diagram that the cylinder body station diagram of working principle plan view intuitively cut open by the complete machine of this motor.

Fig. 4 be the main piston of this motor in lower dead center, compound attached cylinder piston top dead center, precompression work does the working principle all completed, and the position view of each component.

Fig. 5 be the main piston of this motor at top dead center, compound attached cylinder piston lower dead center, the gas work of receiving of precompression chamber does the working principle all completed, and the position view of each component.

Fig. 6 is that the piston work of this motor does principle three-view diagram, A plan view, B left view, C plan view in figure.

Fig. 7 is the working principle that this motor utilizes oil pump and lubricates cylinder body position, and each component oil leab, the position view of the facilities such as oilhole.

Fig. 8 is that in the scavenging process of this motor and scavenging principle design sketch figure, A piston is implemented to be compressed to top dead center to combustible gas, and spark plug igniting is ignited combustible gas, promotes descent of piston and starts acting.In figure, B piston continues descending acting and to have partially opened exhaust empty, comes into effect exhaust to useless in cylinder.In figure, C piston continues to come downwards to and partially opens suction port, and fresh combustible gas enters in cylinder.In figure, D piston is to lower dead center, and an acting completes in preparation and is advanced into next acting.

Fig. 9 is that the scavenging work of this motor does principle and scavenge effect schematic diagram.

Figure 10 is the scavenging working principle schematic diagram of original old-fashioned two-stroke gasoline engine.

Figure 11 is the working principle schematic diagram that this motor utilizes oil pump and lubricates cylinder body position, is mainly used to the display of lubricant housings.In figure, the dotted line place of (62) is the oil feeding pipe of oil pump with lubricant oil in machine, (64) be machine inner engine oil filter cleaner, (63) be the oil feeding pipe of oil pump utilizing the outer two-stroke lubricating oils of machine, because wherein a kind of lubrication way can only be selected herein, therefore represent with dotted line and solid line.

In figure:

1 cylinder head 2 firing chamber

3 piston guide rod 6 piston lubrication back oil roads

The 7 precompressed inflammable gas suction ports in pre-compressed gases air outlet 8

9 cylinder head cylinder body 10 pre-compressed gases passages

12 piston intakes are regulated the flow of vital energy cambered surface 13 cylinder block

14 relief opening 15 piston gas rings

16 piston 17 oil piston rings

The little axle of sharp convex place 19 piston that 18 pistons are regulated the flow of vital energy

20 bent axle chain bar 21 piston bottom oil rings

The compound attached cylinder piston of 22 cranks (bent axle) 23

24 compound attached cylinder cylinder body 25 air inlets are regulated the flow of vital energy cambered surface

26 tooth 27 cylinder head for subsequent use are regulated the flow of vital energy boss place

32 bent axle stub 28 exhaust port tie points

29 attached formula piston torque arm 30 piston torque arm slide blocks

The attached cylinder piston of 31 matrix runs slideway 32 bent axle stub

33 crank shaft oil seal 34 stub bearings

The electrospray nozzle of 35 designs is inserted place 36 cylinder block and is sat

37 main pressing chambers 38 are placed in the piston torque arm slideway on crankcase

Gap 43 spark of 39 master cylinder pistons and attached cylinder piston space

46 body 47 engine oil chambers

The fastening sieve bar of 50 cylinder post fastening nut 51 cylinder post

52 lubricating cylinders hole, body annular lubricant road 53, cylinder body portions

The combustible gas that the exhaust dead angle area 55 of 54 former motors is fresh

The fresh combustible gas that the former motor of waste gas 57 after 56 burnings is lost

The exhaust Resistance 60 opposed engine splash lubrication oil duct of 58 former motors

Lubrication oil feeding pipe of oil pump in 61 lubricating cylinders oil passage 62 machines

The machine oil oil inlet pipe of two-stroke oil lubricating is utilized outside 63 oil filter 64 machines

66 splash lubrication oil passage 68 oil pump

69 oil lubricating pipeline 70 outer air suction ports (unidirectional valve chamber)

71 right oil chambers of left oil chamber 72

73 engine power output shaft 74 pistons are vented cambered surface of regulating the flow of vital energy

75 bent axle intermediate bearing 76 bent axle jack shaft bolsters

77 precompression chamber 78 generators and ignition trigger signals output shaft

The concrete assembling method of this motor

According to display in " 1 page, accompanying drawing ", the concrete number of assembling steps of this motor is: first by the piston torque arm (29) of attached cylinder piston, the attached cylinder piston being loaded the matrix of crank by piston torque arm slide block (30) runs slideway (31), the bent axle (22) of motor loads in body (46), assemble rear inspection bent axle can rotate, the piston (16) that then will install piston gas ring (15) and oil ring (17,21) loads cylinder block (13), in and piston is pushed into the bottommost of cylinder block, and attached cylinder piston to be loaded in attached cylinder.Allow piston guide rod (3) go out through rear whole Shen from attached cylinder piston centre, bent axle chain bar (20) is being drawn out to the highest position.When now cylinder block (13) being loaded to half position along the fastening sieve screw mandrel (51) of cylinder post, then cylinder body is being pushed into the junction with crankcase being aimed at piston guide rod (3) by bent axle chain bar (20) and install the little axle of piston (19), first-class cylinder head (1) finally uses the fastening nut of cylinder post (50) to be tightened.Each group of cylinder position is not always the case assembling, but all must check the rotation situation of bent axle after often installing one group of cylinder position.Finally add four-stroke special engine oil.Like this is exactly, very simply.The motor maximum number of revolutions of design, the revolution of two stroke gasoline engines is 10,000 turns per minute.Because diesel engine needs to strengthen compression ratio, the centrifugal force of piston also can strengthen thereupon, in addition the another parts that do of organic oil pump work again.It is 6,000 turns that the maximum number of revolutions of two-stroke diesel engine is designed to per minute.

Advantage and the Chang Chu of the utility model design are:

One, original two-stroke gasoline engine causes serious environmental pollution when work is done because of the severe smoke evacuation of tail gas, and this invention " environment-friendly and energy-efficient two-cycle engine " has accomplished that when work is done tail gas must not be discharged fume.Two, original two stroke gasoline engines, because the work component at its groundwork position work when very severe, so motor is after work does a period of time, just must there is the phenomenon that crankcase oil seal leaks gas, this is the problem allowing people have a headache most, because the lighter there will be being short of power of motor after the oil sealing gas leakage of crankcase, job insecurity, treat that speed is treated incessantly, accelerate unable, high speed hair car, motor such as to stop burning suddenly at the fault, and another also have the machine oil of gear-box thinning and situation about increasing etc.Now just must change machine oil and oil sealing, as changed oil sealing not in time, these feelings can be raw from recurrence at short notice, and cannot normally can work to making motor when leaking gas serious.Particularly two stroke gasoline engines of multiple casing, because the difference of the time of the explosive combustion workmanship in each cylinder body, for ensureing crankcase precompressed normal work, just must add oil sealing between the crankcase between cylinder and cylinder and intercept, this oil sealing must be located at again the intermediate portion of bent axle.End told, if the crankcase of original two-stroke gasoline engine and crank shaft oil seal gas leakage, be one handling take apart the engine two stroke gasoline engines of overhaul, particularly multi-cylinder exactly when keeping in repair, the crank also must taking bent axle apart changes the oil sealing in the middle of bent axle.So just, can be long to the time-consuming of maintenance, costly, and the more important thing is the interval spreadable life short and keep in repair often.Crankcase blow-by also can to making a large amount of fuel waves useless (comprising gasoline engine oil all), and this wave also directly causing the energy gives up.Give up for reducing the wave of the energy, when the ventilation of designed engines, make fresh gas entering after in cylinder as possible, pushing ahead (see 7 pages, accompanying drawing) of comprehensive synchronous parallel, the loss wave of the inflammable gas that the minimizing so just can done the best is new is useless.In addition, newly establish the firing chamber (74) at the relief opening of machine (14) place and piston concave arc place to synthesize smooth and easy shape, solve piston when original two-cycle engine is vented and will cause venting Resistance (58) lower than relief opening.The space of crankcase is excessive, also to making precompressed underpressure, particularly when crankcase oil seal leaks gas, all to the power wretched insufficiency making motor, can change and be set to this cylinder oneself generation precompression, effectively add precompressed ability.The special machine oil pump of former two stroke gasoline engines of newly having established " the environment-friendly and energy-efficient two-cycle engine " of machine meter to take away, crankcase oil seal, oil sealing in the middle of the bent axle of multicylinder engine, decreases component.After changing this cylinder of cylinder block generation pre-compressed gases into, compressed capability is strong, and air feed is sufficient.The phenomenon that when motor work is done and Du has determined, deflation gas leakage and piston valve type engine and carburetor are regurgitated, adds the power of motor, saves the energy.But in order to the power of stronger increase motor, also to improving the revolution of motor, for improving the revolution of motor, being designed to the working method of short stroke vat through (but the design of two-stroke diesel engine is not included).Change into and use the work done of pure gasoline explosive combustion, the severe exhaust emissions of original two stroke engine is improved, ensure that exhaust emissions is up to standard.And accomplish to pay and national GB14621---the emission standard of 93 four-stroke machines.The large situation in the world today that real reaching conforms to " energy-saving and emission-reduction, low-carbon (LC) is lived, conservation of nature environment, ".

This motor is because decreasing part component, engine weight is lighter, manufacturing cost is lower than former two stroke gasoline engines, more lower than four-stroke gasoline engine, its tractive force is higher than original two-cycle engine, more higher than four stroke engine, reach 2 times that even can exceed original four stroke engine.Be applicable to each large, medium and small type to use as traction and other power traction with the vehicle that petrol engine or diesel engine are power.

The two-cycle engine of this design, as long as strengthening compression ratio is just diesel engine, because the compression ratio of diesel engine is more much higher than petrolic compression ratio, but the work load of crank shaft oil seal will be increased the weight of after increasing compression ratio, so just, the workmanship affecting motor that can be serious and working life, motor of this design is without crank shaft oil seal and precompressed without crankcase, so the work of two-stroke diesel engine can be competent at completely, the parts such as oil pump and oil nozzle (spark plug of should taking away) are being increased after strengthening compression ratio, just two-stroke diesel engine can be designed to, and the diesel engine of two strokes is because be that pure air enters in cylinder block, then strengthen diesel oil spraying into mist, this because of fuel oil be entered by another kind of channel, also without the loss of fuel.Therefore design and improved the precompressed work of motor and do mode, improve the condition of scavenging, strengthen precompressed compressed capability, so just effectively can increase the output of two stroke engine power, and more mainly also improve the severe discharge of two stroke engine simultaneously.

Therefore design and improved the precompressed work of motor and do mode, strengthen precompressed compressed capability, improve the physical arrangement at motor gas port place, strengthen the ability of scavenging, so just, the output of two-cycle engine power effectively can be increased, make this motor from the 1.6-1.8 times power being originally same discharge capacity four stroke engine, the power of same discharge capacity four stroke engine 2.0 times can be exceeded completely, in fact: also because of the work journey system of motor for this reason do not have former four stroke engine "---descending air-breathing---up compression---outburst is done work in piston stroking upward scavenging, entering the up scavenging of next program.This sees between whole 720 °, only have 180 ° be in enforcement acting, other 540 degree are all paying acting, and this plays most code should be called it is that intermittent type does work, and this can reduce the power of motor naturally.And, valve stem, inlet and exhaust valve, valve spring, valve rocker, camshaft, waits a lot of the dynamic of another parts to do, all must consume a large amount of power ".Also be because deducted the consumption of the above various pairs of working powers told, therefore, the power stage of this motor reality is to exceed 2.0 times of same discharge capacity four stroke engine during real work.Its weight is for same discharge capacity four stroke engine 2/3---between 1/2.Newly-designed " environment-friendly and energy-efficient two-cycle engine " its tractive force is higher than original two stroke engine, more higher than four stroke engine, this motor is more suitable for using as traction as the equipment of traction or other power requirement with the vehicle that petrol engine or diesel engine are power for each large, medium and small type.

Claims (3)

1. one kind " compound precompression environment-friendly and energy-efficient two-cycle engine ", its external form is V-type type in upright arrangement opposed type alive, the design of complete machine, can as the motor of petrol engine and diesel engine two kinds of character and use, it is characterized in that: devise horizontally-opposed operation block structure, for increasing receiving the ability of gas, change the physical arrangement of having established original motor gas port, strengthen scavenging ability, do not utilizing crankcase precompression, after this cylinder oneself produces pre-compressed gases, supply main pressing chamber burning outburst and do function, crankcase changes engine oil chamber into and uses lubricant oil directly to main engine-part, comprise cylinder piston and implement lubrication, designed two stroke engine is not in use mixed fuel burning outburst acting, use pure fuel oil service.

2. follow and it is characterized in that according to " compound precompression environment-friendly and energy-efficient two-cycle engine " described in claim 1: the working method being designed to non-crankcase compression, after producing pre-compressed gases by this cylinder oneself, function is done in the main compression outburst of direct-furnish, sit in the cylinder block of original environment-friendly and energy-efficient two stroke engine, add the attached cylinder cylinder block opposite with original cylinder block, and in this cylinder block, be designed with attached cylinder piston, be provided with piston torque arm in the bottom of attached cylinder piston to be connected with piston, piston torque arm slide block is provided with in piston torque arm lower end, the side relative with bent axle stub on the crank of bent axle, the attached cylinder piston being designed with matrix runs slideway, the piston torque arm slide block of piston torque arm lower end design is inserted in this slideway, like this when crankshaft rotating, two eccentric circumference will be produced in motion simultaneously, because the attached cylinder piston of the matrix of its design runs slideway, with the crank of bent axle is in relative side with bent axle stub, when crank rotation, two pistons will produce opposite motion like this, when main piston is descending, attached cylinder piston will be up, like this when main piston is to lower dead center, attached cylinder piston all will enter the inside of main piston, the inflammable gas that main piston inside retains all is extruded and sent main pressing chamber to, the pre-compressed gases being originally trapped in main piston inside is so just made all to be utilized, the precompression of former motor less than 2: 1 is increased to more than 6: 1, increase the ability that air demand improves air feed, add the power of motor, what utilize piston and cylinder coordinates the physical arrangement changing and established gas port place, new combustible gas is gone directly favourable emptying waste gas bottom waste gas, after changing the physical arrangement at former motor gas port place, prevent original two stroke engine because of ventilation short circuit, the loss of the inflammable gas 25%-40% caused, this motor is not utilizing crankcase precompression, crankcase changes engine oil chamber into, and according to the type of motor, splash lubrication is done to each parts and directly lubricates, or utilize oil pump machine oil pipeline to implement lubrication, the machine utilizes oil pump and machine oil pipeline lubrication, mainly lubrication is implemented to cylinder block and piston, utilize the lubricating system of oil pump machine oil pipeline herein, also be designed to the lubricating system of two kinds simultaneously, a kind of design is that oil pump is by machine oil pipeline, the lubricant oil in machine is utilized to implement lubrication to cylinder body and piston, another kind is in machine, arrange two-stroke oil pump, the in-line of oil pump is guided to outside machine, special two-stroke sump is set outside machine, two-stroke machine oil is utilized to implement lubrication to the parts such as cylinder block and piston specially, because this motor has established special lubrication facility to cylinder piston, therefore motor is changed be set to use pure fuel oil service, exhaust emissions is made to be same as four stroke engine.

3. follow and it is characterized by according to " compound precompression environment-friendly and energy-efficient two-cycle engine " described in claim 1: the working method of the design at the gas port place of complete machine is, main piston is up implements compression to the inflammable gas in cylinder, attached cylinder descent of piston precompression chamber includes new gas in simultaneously, main piston is to the quick-fried acting of top dead center gas fuel burning, precompression chamber now receive gas also to complete, it is descending that inflammable gas promotes main piston, attached cylinder piston stroking upward simultaneously in attached cylinder, precompression is implemented to including gas new in precompression chamber in, main piston is to time before bottom dead center, first relief opening is opened, by outside the waste gas discharge machine in cylinder block, piston continuation is descending opens precompressed air suction port, start to inject fresh combustible gas in cylinder block, also just waste gas remaining in cylinder is scanned out outside machine simultaneously, after main piston to the attached cylinder piston of lower dead center all enters main piston, motor enters next working procedure, can be clearly seen that in C from figure, fresh combustible gas enters the bottommost place flinging waste gas in cylinder block after in cylinder block, then thorough by outside the waste gas kickoff mechanism in cylinder block, piston continuation is descending sees Fig. 8 D, porting is all opened, whole scavenging work completes, the exhaust of described design piston matrix firing chamber is here regulated the flow of vital energy cambered surface, slightly high above, become smoothly arc just to exhaust port, here again exhaust port is suitably lengthened, be beneficial to the discharge of waste gas, the design of described precompressed air suction port, it is far from being enough for depending that the angle be originally arranged on casing wall regulates the flow of vital energy alone, also therefore original two-stroke gasoline engine just can cause the loss of inflammable gas new in a large number, head it off is the structure of having changed piston, front top about 1/13rd place of piston is designed to sharp convex, and leaning on precompression suction port side, piston is provided with camber air inlet upwards and regulates the flow of vital energy cambered surface, this design is main for solving the new circulation angle of pre-compressed gases after entering cylinder block, cannot process original two stroke engine, in cylinder block, the waste gas of dead angle area does and clears up eliminating very well, here new pre-compressed gases directly rushes at the bottom of cylinder cap front end waste gas after entering cylinder block after, straight expansion covering of the fan is formed and the waste gas better released in cylinder when turning back, and the just new gas of guarantor can not be run out of outside machine, the upper top that the firing chamber of described motor is located at piston is lower concave arc shape, cylinder cap and piston form firing chamber at piston to during top dead center, and the firing chamber place of cylinder head is designed to oblique flat type, this design is also main for solving new pre-compressed gases after entering cylinder block, process for the waste gas of the dead angle area in cylinder is got rid of, piston guide rod is equipped with in the bottom of piston, be secure fit with piston, be connected with bent axle chain bar by little axle, bent axle chain bar do not enter the precompression chamber of cylinder block, but exported by crank conversion by the acting that piston guide rod receiving piston transmits, described piston, piston ring, the Lubrication Design of cylinder inner wall is two kinds of modes, a kind of mode leans on the knockout press of crank to be thrown away by machine oil to do splash lubrication, another kind of mode is by oil pump, machine oil pipeline implements lubrication, in two, lubricating system is all that first lubricant oil arrive annular lubricant oil duct, annular lubricant oil duct communicates with lubricating cylinders oilhole, lubricant oil enters cylinder inner wall by lubricating cylinders oilhole, to cylinder inner wall, piston, piston ring lubricates, by back oil road backspace engine oil chamber when lubricant oil is too much, this motor advocates to implement in the front portion of precompressed inflammable gas suction port for the enforcement of electrospray, do not advocate that design is at in-cylinder direct injection, because in-cylinder direct injection can because of the effect of atomization not as cylinder sprays outward, PM value several times can be made after burning to increase.